package com.itheima.service;

import java.util.List;
import java.util.Map;

/**
 * @author Gallant
 * @create 2020-07-12 08:14
 */
public interface MemberService {
    // 根据月份返回会员的数量
    public Integer findMemberCountByMonth(String month);

    //会员性别
    public List<Map<String, Object>> findMemberGenderCount();

    //会员年龄
    public Map<String, Object> findMemberAgeCount();

    Map getMemberReportByDate(Map map)throws Exception;
}
